ATLANTA — Delta Air Lines Inc. and negotiators for its pilots union reached a tentative agreement yesterday on pay and benefit cuts that could avert a strike at the nation's third largest carrier and ease uncertainty among travelers over the busy Easter weekend.

No details of the agreement were released. The deal would be subject to ratification by the airline's 5,930 pilots.

The pilots union had threatened to strike if its contract was thrown out. Delta, which has been operating under bankruptcy protection since September, has said in court papers that a pilot strike would put it out of business.

An arbitration panel had until today to reach a decision on Delta's request to throw out its pilot contract so it could impose up to $325 million in annual pay and benefit cuts. That decision is now on hold with the tentative agreement, but it could resurface if the rank-and-file pilots reject the agreement.

"I'm very pleased the parties have reached a tentative agreement," the panel chairman, Richard Bloch, told The Associated Press.

He declined to comment further, referring questions to the parties.

In a statement, Delta said the deal also is subject to bankruptcy court approval, but the airline believes passengers can book with confidence.

"We have worked hard together as a team to forge an agreement that is good for Delta and all of its constituents," said Delta's chief financial officer, Ed Bastian.

Meanwhile, talks are continuing between Delta's wholly owned subsidiary, Comair, and its flight attendants. A federal bankruptcy judge agreed this week to postpone until Monday a decision on whether to void Comair's contract with its flight attendants. Both sides requested the postponement to allow more time for negotiations.

The regional airline, based just across the Ohio River from Cincinnati in Erlanger, Ky., filed for bankruptcy protection along with Delta last year. Comair is seeking $8.9 million in wage cuts and other savings from the flight attendants.

Delta's pilot strike threat had unnerved passengers, some of whom scrambled to make alternate travel plans over the busy Easter weekend. The threat also hurt bookings on the Atlanta-based airline.

Delta's mainline carrier operates 1,722 daily flights and had more than 118 million passengers last year. It has its second-largest hub at Cincinnati /Northern Kentucky International Airport.

In his memo to Delta pilots, the chairman of the union's executive committee, Lee Moak, said the deal was reached early yesterday morning. He said union leaders will meet in the next week to discuss the deal and determine whether to recommend it to the membership.

"We will not hurry," Moak said. "We will proceed in an unrushed, methodical manner."

Delta's pilots previously agreed to $1 billion in annual concessions, including a 32.5 percent wage cut, in a five-year deal in 2004. But Delta, which has imposed pay cuts on other employees, said it needs more from its pilots.

The company says the average earnings of pilots last year who worked the full year was more than $157,000. But the pilots union has said the figure was inflated by overtime and they have projected a significant decrease in average pilot earnings for 2006.